$ git clone -n https://src.fedoraproject.org/rpms/xrestop.git /var/lib/mock/f42-build-879165-181615/root/chroot_tmpdir/scmroot/xrestop
Cloning into '/var/lib/mock/f42-build-879165-181615/root/chroot_tmpdir/scmroot/xrestop'...
$ git fetch origin b4635eed88cd13fc820c987af3e0f339c5902ea6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xrestop
 * [new ref]         b4635eed88cd13fc820c987af3e0f339c5902ea6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4635ee Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild